Improvement in spark-arresters for locomotives



BENJAMIN GARVIN.

improvement in Spark Arr-esters for Locomotives.

No. 119,928. Pmnredom. man

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t the plate being equal, or nearly so.

UNITED STATES IPATENT QFFICE..

` BENJAMIN GARVIN, OF OSHKOSH, ASSIGNOB OF OND-HALF HIS RIGHT TO HENRYHULL, OF FOND DU LAO, WISOON SIN.

IMPROVEMENT IN SPARK-ARRESTERS FOR LOCOVIVIOTIVES.

Specification forming part of Letters Patent No. 119,928, dated October17, 1871.

To all whom zt may concern:

Be it known that l, BENJAMIN GARvIN, of

Oshkosh, in the county-of VViunebago and State of Visconsiu, haveinvented a new and Improved Spark-Arrester for Locomotives 5 and I dohereby declare the following to be a full, clear, and exact descriptionof the same, reference being had to the accompanying drawing formingpart of this speciiication, in which- Figure 1 is a vertical centralsection of a locomotive smoke-stack, showing the application of' myimprovements. Fig. 2 is a transverse section of the same taken in theplane of the line a' x, Fig. 1.

Similar letters of reference in the accompanying drawing indicatecorresponding parts.

My invention has for its object to provide a spark-arrester forlocomotives which shall be more economical in construction and eicientin operation than those now Vin use; and to this end the inventionconsists in an improved lconstruction of the same, as hereinafter setforth.

In the accompanying drawing, A is the smokestack of a locomotive-enginemounted upon the bridge-plate in the usual manner. B is the smoke-pipe,placed concentrically within the stack, extending upward from thebridge-plate about one-half or two-thirds the length of the stack, andis held in place near its lower end by the band C, which is supportedfrom the stack by short bars or rods D. The lower end of this pipereceives the ends of the exhaust-pipes in the usual manner. E is thetruncated conical detlector, supported from the end of the smokepipeabout on a line with the top ofthe stack by means of the rods F and nutsG.

The parts thus far described are in common use in nearly alllocomotives, and do not, in themselves, constitute my invention, butform the basis of its application, as I will now proceed to describe.

H is a diaphragm placed midway of the stack and provided with a centralopening to receive the end of the smoke-pipe B, which lits therein withclose contact; or the smoke-pipe may terminate immediately under theplate, if preferred, the diameter of the pipe and of the opening incircular opening the diaphragm is inclined down- From thev ward to thestack to form a shallow receptacle for the accumulation of sparks. I isan annular plate secured to the outer edge or the conical deilector andextending` inward toward the apex of the same to form a chamber, J, asshown in Fig. l. This chamber communicates with the stack below thediaphragm by means of short tubes or divin g-flues K, which are securedto the annular plate around suitable openings formed therein, and extenddownward through the diaphragin.

The operation is as follows: lVhen the engine is in motion andexhausting through the pipe B, the sparks from the lire-box are carriedupward through said pipe, by the force f the exhaust, until they come incontact with the deflector, by which they are directed` into the chamberJ. From this chamber they descend, in the form of cinders, through theiiues K, into the stack below the diaphragm H and upon the outside ofthe smoke-pipe, lodging around the base of the latter, from which theymay be removed through a door placed at the base of the stack. Thosesparks Vwhich are still alive,77 or containing fire, as they reach thelower end of the smoke-pipe, Vare drawn up again, bythe exhaust, throughthe openings L at the base of the said pipe and again carried downthrough the fines below the diaphragm.

Owing to the circuitous course of the sparks, they are thoroughly beateninto fine particles or cinders, a portion of' which is expelled with theexhaust through the netting of the smoke-stack, while another portionaccumulates upon the top of the diaphragm, from whence it may be removedfrolu time to time. Owing to the arrangement of the diaphragm, the forceof the exhaust does not a'ect the sparks or cinders as they escape fromthe ends of the diving-fines, so that they readily fall to the base ofthe smoke-pipe, where they lodge or are again carried up by the exhaust,as above described.

Having thus described my invention, what I claim as new is- 1. Theconical delector E, constructed with an annular plate, I, as described,for the purpose specified.

2. In a locomotive smoke-stack, the combination of two chambersconnected by diving-dues,

one chamber, J, formed by the annular plate I K, in combination With thestack A, deector E, and the detiector E, being arranged t0 receive andsmoke-pipe B, substantially as described, for the live sparks from theexhaust, and the other the purpose specified.

chamber, formed by the diaphragm H, being ar- BENJAMIN GARVIN. ranged toreceive the spark-cinders after they Witnesses:

have passed through the first chamber, substan- CHR. SAVAN, Jr.,

tially as described, for the purp ose specified. HYP. DAUBEN,

3. The diaphragm H, annular plate I, and ues ALBERT HILTON. (94)

